The Amazon page listings don't distinguish between the far more common U.S. Wynwood edition, and the original, and rarer, U.K. Hippocrene/Midas edition.

Still, even for an unsigned copy of the latter, the price being sought on eBay is way, way out of line. I won an auction for a copy (ex-library, but in excellent condition) last year for, I seem to recall, about $25 (it's a second for-thumbing-through copy; I have one of the autographed copies the Society offered members when it was first published in 1982, to which Dr Rózsa added a personal inscription in 1984. A cherished possession).

Anyone selling on eBay owes it to him/herself to research as fully as possible what the traffic bears on an item, otherwise he/she risks the costs of placing a listing with the website that produces no sale or return.

For a somewhat better idea of what one might expect to pay for a copy of Double Life, look here:

www.bookfinder.com/search/?ac=sl&st=sl&qi=4hDbChS,zR1nY,,5Gdc6FaxVpW0_8260976685_1:12:143

though the professional booksellers whose listings Bookfinder.com carries are often as clueless as amateur sellers on eBay, and elsewhere.